Thailand Water Supply System Project

1. Thailand Water Supply System Project By: Stephen Bonk (Team Leader) Kevin Dischino Joseph Moore

2. Preliminary Site Assessment Village of Hantham: subset of Longkhot, Thailand Inadequate water supply during the dry season 159 Households and 453 People Average Water Usage: 200 L/day per Household Gathered Survey Data Collected Soil Sample Determined available resources

3. Survey Data

4. Design Goals Supply entire village Sustainably powered pumping system Easily maintained and constructible Storage System Distribution System O & M Manual Extremely Economical

5. Water Resources and Hydraulics Design

6. Water Usage Average Annual Water Usage is 200 L/day per Household Total Village Usage is 1,123 cf/day Total Tank Volume for 3 day supply = 3,369 cf Maximum Hourly Flow per Year is 270% of Average Flow per Year Maximum Hourly Flow per Year = 0.0351 cfs

7. Minimum Storage Tank Elevation Must provide adequate water pressure for highest household in the village Is structure required to provide additional elevation?

8. Minimum Storage Tank Elevation

9. Minimum Storage Tank Elevation

10. Minimum Storage Tank Elevation • Major Head Loss in Pipe A: • 1 in Diameter  Major Head Loss = 323.5 ft • 2 in Diameter  Major Head Loss = 11.7 ft • 3 in Diameter  Major Head Loss = 1.7 ft • Minimum Diameter of Pipe A for Maximum Velocity of 10 fps = 0.8 in • 3 in Diameter Pipe Selected

11. Minimum Storage Tank Elevation • Using 3 in Diameter Pipe A • Site 1 and Site 2 Inadequate • Site 3 Adequate, No Tower Necessary • Place Storage Tanks at Site 3, Ground Level • Orange House Water Pressure will be 4 psi under Dynamic Conditions during Max Hour Flow

12. Pumping System • Submersible Pump • Pusher Pump • System Energy

13. Pumping System

14. Pump System • Future Design Considerations • Manufacturer Specifications for Pumps • Solar Panel System Power Requirements • Tank Level Switch

15. Water Distribution System Design

16. Site View

17. Process • Split Section A into Pipe Branches • Maximum Hourly Flow per Year: • 2.207x10^-4 cfs for each household • Determine flow through each Pipe • Darcy – Weisbach Equation • Reynold’s Number, ε/D • Use of WaterCAD

18. Section A Schematic Pipe 7 = 275 ft. Pipe 6 250 ft. Pipe 5 350 ft. Pipe 4 = 200 ft. Pipe 1 445 ft. Pipe 2 320 ft. Pipe 3 200 ft.

19. Design of Pipe 1 • Assume Maximum Velocity between 10-20ft/s • Find Minimum Diameter needed (A = Q/V) • For Pipe 1 of 13Q: • Diameter = 0.16” – 0.23” • For 0.25” Diameter • Head Loss = 658 feet (Too Large) • For 1” Diameter – Head Loss = 0.98 feet • For 2” Diameter – Head Loss = 0.0242 feet

20. WaterCAD Schematic

21. Input / Output

22. Total Head Loss • Hand Calculations • 1” Diameter – 3.025 feet • 2” Diameter – 0.079 feet • WaterCAD Results • 2” Diameter – 0.0665 ft.

23. WaterCAD Output

24. Geotechnical and Storage Tank Design

25. Foundation • Soil Profile • γ=105 pcfφ = 30o c = 0 psf (Normally Consolidated Soil) • Soil Classification • USCS: Silty or Clayey Sand • Minimum soil characteristics • γ= 80 pcfφ= 28o c = 0 psf • Bearing capacity: Min=3855.9 psf, Estimated=13062.84 psf • Factor of Safety: Estimated=16.09, Min=4.75

26. Soil Properties

27. Foundation Spreadsheet

28. Water Tank Design • Type • Reinforced Concrete Rectangular Tank (25’x25’x6’) • Fiberglass or Reinforced Concrete Circular Tank ( Dia.=18’) • 12” thickness of wall and 8” slab. • Formwork • Availability • Reinforced Concrete only available, no fiberglass • Cover: Reinforced Concrete or Sheet Metal • Placement: Site 3 • Construction Time

29. Rectangular Cantilever Concrete Tank Height: 6 feet Depth of Embedment: 2 feet Top of Wall: 8” Concrete Heel and Toe slab use same reinforcement Water Stirrup (Rubber)

30. Rectangular Cantilever Storage Tank

31. Gantt Chart

32. Budget

33. Questions?